Post-earthquake analysis and optimization method for urban water supply pipe network based on delay simulation

Abstract

The invention discloses a post-earthquake analysis and optimization method for an urban water supply pipe network based on delay simulation, and relates to the technical field of safety risk assessment. The method comprises the following steps of S1, generation of a post-earthquake leakage scene of the urban water supply network; S2, analysis of post-earthquake water demand space-time characteristics of urban water supply nodes; S3, calculation of post-earthquake urban water supply node delay reliability; S4, determination of a post-earthquake damaged pipeline optimization repair sequence; S5, an optimization dispatching model of a pipeline repair team after earthquake. a Monte Carlo method is adopted to simulate a randomly generated earthquake damage scene of a water supply pipe network, a spatial and temporal change relation of water demand/water consumption of a user node after an earthquake is determined in combination with a population evacuation rule, pipe network post-earthquake hydraulic function analysis is carried out based on a pressure-driven node water distribution model, and pipeline repair sorting and maintenance team dispatching are considered; a post-earthquake pipe network function recovery optimization model is created and a recovery strategy of an earthquake damaged pipeline is determined in the water supply pipe network.

Description

Technical field [0001] The present invention relates to the field of safety risk assessment, and in particular, a method of analyzing and optimizing a urban water supply pipe network based on delay simulation. Background technique [0002] The urban water supply system is the same transport, electric power, heating, communication system is a lifeline of modern city, and is called a lifeline engineering system called modern city. In recent years, urban lifeline engineering systems have been related to urban daily production and life, and people have continued to strengthen their dependence, and demand is also growing. Unlike other general city infrastructure, life line project has a wide range of coverage, close inter-system links, and local damage may affect system function. Earthquake is one of the natural disasters that have a large degree of destruction on Earth. [0003] According to the "China Earthquake Parameters" shows that there are nearly 50% of the country of land, mor...

AI Technical Summary

Problems solved by technology

As an important part of the lifeline engineering system, once the urban water supply is subjected to a large earthquake, it will be damaged to varying degrees, which will often cause the loss of urban functions and bring great adverse effects to the city.

A large number of earthquake damage data show that the earthquake will cause damage to the water supply pipe network to varying degrees, leading to a decline in the water supply capacity of the pipe network. People's economic development and normal life have brought irreparable losses

[0004] With the continuous strengthening of my country's urban infrastructure construction, the problems of many old cities and poor urban infrastructure in my country have been improved to a certain extent. Most of them have not gone through the formal seismic design, and there are problems such as the earthquake damage simulation of the water supply pipe network system and the hydraulic analysis of the damaged pipe network after the earthquake.

Images